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Systems calibrated against 3 observations of Cass A.
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System used: Phase switched Interferometer Frequency: 20.4MHz, Scanning within +/- 100kHz of main frequency Switching frequency: 360Hz Aerials: 2x2 elements, tuned Yagis for 20.4MHz, capture area 60 square meters, 35 feet up scafold towers. Baseline: geographic E-W, 220meters Aerial Elevation both 25 degrees (due South, geographic) System time constat = 15secs Output typically +/- 0.4V noise level. System sensitivty (theoretical) 3e-23 W/Hz/m2 System bandwidth = 10kHz Typical system gain = 140dB recording mechanism - BBC computer (Archimedes) + chart recorder
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